Shoe Sole for Losing Weight and Shoe Having the Same

ABSTRACT

Disclosed therein is a shoe sole for losing weight and a shoe having the same. The shoe sole includes: a shoe sole having a joining recess formed on an upper face or a lower face thereof; and a joining member having a form corresponding to the form of the joining recess and joined to the joining recess, the joining member being made of a material, which is higher in density than that of the shoe sole. The plural joining recesses are respectively formed at the toe area and the central area in a longitudinal direction of the shoe sole, and at least one of the joining recess of the toe area and the joining recess of the central area has an inclined surface.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a shoe sole and a shoe having the same, and more particularly, to a shoe sole for losing weight and a shoe having the same, which can simultaneously provide a kinetic effect to the same extent as a wearer lifts dumbbells with the legs and a correction of knee joint deformities.

2. Background Art

In general, gait of a human being is divided into a stance phase and a swing phase. The stance phase means the instant the foot contacts the ground, and accounts for approximately 60 percent of a normal gait cycle. The stance phase is subdivided into five phases: initial contact, loading response, midstance, terminal stance, and preswing.

Here, the Initial contact represents the beginning of the stance phase, and occurs the instant the heel of the foot touches the ground first. In this instance, the hip joint is bent, the knee joint is straightened, and ankle joint moves the top of the foot a little upward (dorsiflexion). Furthermore, the opposite foot is in the terminal stance phase. That is, it means a simultaneous stance phase.

Loading response, which is the second phase of the stance phase, occurs directly after the heel of the foot touches the ground. During loading response, the foot comes in full contact with the floor, and body weight is transferred onto the stance limb. The knee joint is bent a little in order to absorb impact to the transferred weight, so that the body weight does not transferred excessively. At the same time, the ankle joint moves down the foot (plantarflexion) and the opposite foot is in the preswing phase.

Mid stance, which is the third phase of the stance phase, occurs when the center of gravity of the body goes over the center of the sole of the foot. During this phase, the body weight is supported by only one foot, and the hip joint is straightened. In this instance, the ankle joint moves the top of the foot upward (dorsiflexion), and the opposite foot is in a midswing phase of the swing phase.

Terminal stance, which is the fourth phase of the stance phase, occurs when the hip joint and the knee joint are gradually straightened and the ankle joint carries out the movement to gradually move down the top of the foot to thereby prevent that the center of gravity of the body is excessively transferred to the front. In this instance, the opposite foot is in a terminal swing phase of the swing phase and prepares for the initial contact phase.

Preswing, which is the fifth phase of the stance phase, occurs when the contralateral foot contacts the ground and ends with ipsilateral toe off. In this instance, the hip joint and the knee joint are gradually bent, and the ankle joint carries out the plantarflexion. The opposite foot is in the loading response phase.

The swing phase means the period that the foot leaves the ground, and accounts for approximately 40 percent of a normal gait cycle. The swing phase is subdivided into three phases: initial swing, mid swing, and terminal swing. Here, the initial swing phase occurs after toe-off, and in this instance, a swing speed gradually increases through a motion that the foot swings in the air, and the hip joint and the knee joint carries out flexion. Additionally, the ankle joint carries out dorsiflexion, and the opposite foot is an early stage of the mid stance phase.

Mid swing, which is the second phase of the swing phase, is the final stage of the initial swing and the early stage of the terminal swing. The hip joint and the knee joint are gradually straightened while going through the central line of the body. In this instance, the ankle joint keeps the dorsiflexion state of the mid swing phase, and the opposite foot is in the final stage of the mid stance.

Terminal swing, which is the final phase of the swing phase, is a phase that the knee fully extends in preparation for heel contact. In this instance, the hip joint keeps a slightly bent state but the knee joint is fully straightened, and the ankle joint keeps the dorsiflexion state. The opposite foot is in the terminal stance phase.

Walking starts as the center of body weight is transferred forward. A human being walks while moving the center of body weight forward by moving weight of a part of his or her body forward.

It is the most idealistic to lift up the leg and straighten up the upper body when weight of a part of the body is put forward for walking. However, persons with a rapid pace or persons with weak muscle strength at the lower limbs put their heads forward. When the head is put forward, the back is naturally bent to thereby cause musculoskeletal disorders. Such a symptom increases while the wearer wears high-heeled shoes. The reason is that the high-heeled shoes cause an instable posture due to a forward movement of the center of gravity. In this instance, the upper body is bent forward and the hips are pulled back in order to prevent that the wearer falls forward due to the forward bending of the upper body. Accordingly, the human body has two centers of the upper body and the lower body: one being a hip joint-centered line; and the other being a spine-centered line. Then, impact to the waist grows up and it may cause backache.

As the level of income has increased with the development of industries, the basic food, clothing and shelter problems have been solved, but health-related problems, such as stress, adult diseases, obesity, and so on, have become serious social problems. In the meantime, recently, the whole nation is growing more and more interested in health due to the advent of the well-being era. In such a context, exercise, orthotherapy, diet, and so on has recently become the main interest among not only women but also men. With the trend of society, heelless shoes for losing weight have been invented. When a wearer wears the heelless shoes, because the center of the foot naturally moves toward to the tiptoe and the wearer walks in a bouncy gait, power is concentrated on the abdomen and the legs and muscles of the calves and the femoral muscle are repeatedly relaxed, whereby it improves muscular strength and endurance to thereby provide a weight loss effect.

However, the shoes have a problem in that they do not provide a posture correction effect because they have been invented to induce the bouncy gait by concentrating body weight on the toe portion of the foot in order to provide a marathon race effect or a run race effect even while walking. Moreover, the conventional shoes have another problem in that they do little to lose weight due to a poor kinetic effect.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a shoe sole for losing weight and a shoe having the same, which can simultaneously provide a kinetic effect to the same extent as a wearer lifts dumbbells with the legs and a correction of knee joint deformities.

To accomplish the above object, according to the present invention, there is provided a shoe sole for losing weight comprising: a shoe sole having a joining recess formed on an upper face or a lower face thereof; and a joining member having a form corresponding to the form of the joining recess and joined to the joining recess, the joining member being made of a material, which is higher in density than that of the shoe sole.

In this instance, the joining member has a front portion heavier than a rear portion.

Furthermore, the joining recess is formed at a toe area of the shoe sole.

Moreover, the joining recess is formed on an inner side of the shoe sole for a wearer with O-shaped legs.

Additionally, the joining recess is formed on an outer side of the shoe sole for a wearer with X-shaped legs.

In addition, a plurality of the joining recesses is formed.

Furthermore, the plural joining recesses are respectively formed at the toe area and the central area in a longitudinal direction of the shoe sole, and at least one of the joining recess of the toe area and the joining recess of the central area has an inclined surface.

Additionally, the joining recess formed at the toe area of the shoe sole is formed within a range of 0% to 40% in a forward longitudinal direction of the shoe sole, and the joining recess formed at the central area of the shoe sole is formed within a range of 41% to 80% in the forward longitudinal direction of the shoe sole.

Moreover, the inclined surface of the joining recess is an upward inclination, which is inclined upwardly from the inner side of the shoe sole.

In addition, the inclined surface of the joining recess is a downward inclination, which is inclined downwardly from the inner side of the shoe sole.

Furthermore, the joining recess is formed on the upper face of the shoe sole, an insole is disposed on the shoe sole, and the joining member and the insole are formed integrally with each other.

Additionally, the joining recess is formed on a lower face of a midsole of the shoe sole, and the joining member is formed integrally with an upper face of an outsole of the shoe sole.

Moreover, the shoe sole further includes a groove formed on a side of the bottom surface of a rearfoot portion of the shoe sole in order to reduce weight of the rearfoot portion.

In another aspect of the present invention, the above object can be achieved by a shoe having the shoe sole for losing weight, which is described above.

According to the present invention, the shoe having the shoe sole for losing weight can provide the wearer with the kinetic effect to the same extent as a wearer lifts dumbbells with the legs because the forefoot portion is heavier than the rearfoot portion, whereby it helps to lose weight.

Furthermore, the present invention can increase a kinetic effect by making plantarflexion quicker and smoother during a limb support because the center of gravity of the shoe sole is transferred forward.

Moreover, by controlling the position of the joining member, the present invention can control the inside and outside balance of load applied to the foot and the knee because the central point of the ground reaction force moves toward the center of the foot and it shows an ideal trajectory of the central point of the ground reaction force, so that the O-shaped legs or the X-shaped legs can be corrected into the straight legs.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which:

FIG. 1 is an exploded perspective view of a shoe sole for losing weight according to a first preferred embodiment of the present invention;

FIG. 2 is a sectional view taken along the line of A-A of FIG. 1;

FIG. 3 is an exploded perspective view of a shoe sole for losing weight according to a second preferred embodiment of the present invention;

FIG. 4 is a sectional view taken along the line of B-B of FIG. 3;

FIG. 5 is an exploded perspective view of a shoe sole for losing weight according to a third preferred embodiment of the present invention;

FIG. 6 is a side sectional view of a shoe sole for losing weight according to a fourth preferred embodiment of the present invention;

FIG. 7 is an exploded perspective view of a shoe sole for losing weight according to a fifth preferred embodiment of the present invention;

FIG. 8 is a sectional view taken along the line of C-C of FIG. 7;

FIG. 9 is a side elevation view of a shoe sole for losing weight according to a sixth preferred embodiment of the present invention;

FIG. 10 is a back elevation view of the shoe sole for losing weight according to the sixth preferred embodiment of the present invention;

FIG. 11 is a perspective view of the shoe sole for losing weight according to a seventh preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs;

FIG. 12 is an exploded perspective view of the shoe sole for losing weight according to the seventh preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs;

FIG. 13 is a sectional view taken along the line of A-A of FIG. 12;

FIG. 14 is a sectional view taken along the line of B-B of FIG. 12;

FIG. 15 is a sectional view taken along the line of C-C of FIG. 12;

FIG. 16 is a sectional view taken along the line of D-D of FIG. 12;

FIG. 17 is an exploded perspective view of the shoe sole for losing weight according to the seventh preferred embodiment of the present invention, which is designed for wearers, who have X-shaped legs;

FIG. 18 is an exploded perspective view of a shoe sole for losing weight according to an eighth preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs;

FIG. 19 is a sectional view taken along the line of B-E of FIG. 18;

FIG. 20 is a sectional view of a shoe sole for losing weight according to a ninth preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs;

FIG. 21 is an exploded perspective view of a shoe sole for losing weight according to a tenth preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs;

FIG. 22 is a side elevation view of a shoe having the shoe sole for losing weight according to the sixth preferred embodiment of the present invention; and

FIG. 23 is a side elevation view of a shoe having the shoe sole for losing weight according to the seventh preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In general a shoe is comprised of an insole, a midsole, and an outsole. A shoe sole 100 according to the present invention includes at least one of the insole 300, the midsole 104 and the outsole 106.

Reference will be now made in detail to the preferred embodiment of the present invention with reference to the attached drawings.

Structure of Sole Embodiment 1

FIG. 1 is an exploded perspective view of a shoe sole for losing weight according to a first preferred embodiment of the present invention, and FIG. 2 is a sectional view taken along the line of A-A of FIG. 1. As shown in FIGS. 1 and 2, the shoe sole 100 according to the present invention constitutes the bottom of a shoe, and has a joining recess 110 formed on the entire upper face thereof. The shoe sole 100 can be made of any material if it is not easily deformed or damaged by external impact or pressure caused by a wearer's body weight. However, preferably, the shoe sole is made of synthetic resin or a rubber material. Moreover, more preferably, the shoe sole is made of ethylene vinyl acetate (EVA), polyurethane (PU), chloroprene rubber (CR), or neoprene.

As shown in FIGS. 1 and 2, a joining member 200 is joined to the joining recess 110 formed on the upper face of the shoe sole 100, and has the same form as the inside of the joining recess 110. In this instance, the joining member 200 has a front portion, which is thicker than a rear portion in order to improve the wearer's kinetic effect. Furthermore, it is preferable that the joining member 200 is made of a material, which is higher in density than the shoe sole 100, such as high-gravity polyurethane or high-gravity rubber.

As described above, when the joining member 200, which has the front portion thicker than the rear portion, is joined to the joining recess 110 of the shoe sole 100 to thereby make a forefoot portion 101 heavier than a rearfoot portion 102 of the shoe sole 100, a center of gravity 105 of a shoe can move forward at a predetermined interval. When the center of gravity 105 moves forward, the wearer's foot leans forward, and then, it makes forward plantarflexion quicker and smoother, whereby the wearer can be provided with an exercise effect to the same extent as the wearer lifts dumbbells with the leg during the stance phase.

Embodiment 2

FIG. 3 is an exploded perspective view of a shoe sole for losing weight according to a second preferred embodiment of the present invention, and FIG. 4 is a sectional view taken along the line of B-B of FIG. 3. As shown in FIGS. 3 and 4, the shoe sole 100 according to the second preferred embodiment of the present invention is generally constructed of the same form and materials as the first preferred embodiment, except in the case that the joining recess 110 is formed on a front part of the upper face thereof.

The joining member 200 according to the second preferred embodiment has a form corresponding to the joining recess 110 formed on the front part of the upper face of the shoe sole 100, and is made of the same material as the first preferred embodiment.

Embodiment 3

FIG. 5 is an exploded perspective view of a shoe sole for losing weight according to a third preferred embodiment of the present invention. As shown in FIG. 5, the shoe sole 100 according to the third preferred embodiment of the present invention is generally constructed of the same form and materials as the first preferred embodiment, except the case that the joining recess 110 is formed on the inner side of the upper face of the shoe sole 100 in order to simultaneously obtain the kinetic effect and a knee correction effect when a person with O-shaped legs wears shoes having the shoe sole according to the third preferred embodiment of the present invention.

The joining member 200 according to the third preferred embodiment of the present invention has a form corresponding to the joining recess 110 formed on the shoe sole 100, and has a front portion thicker than a rear portion in order to transfer the center of gravity 105 forward. Moreover, the joining member 200 is made of the same material as the first preferred embodiment.

As described above, in the case that the joining recess 110 is formed only on the inner side of the shoe sole 100, the shoe sole 100 can correct the O-shaped legs by inducing abduction by the joining member 200 during walking, and provide a kinetic effect because the front portion of the joining member 200 is thicker than the rear portion.

Embodiment 4

FIG. 6 is an exploded perspective view of a shoe sole for losing weight according to a fourth preferred embodiment of the present invention. As shown in FIG. 6, the shoe sole 100 according to the fourth preferred embodiment of the present invention is generally constructed of the same form and materials as the first preferred embodiment, except the case that the joining recess 110 is formed on the outer side of the upper face of the shoe sole 100 in order to simultaneously obtain the kinetic effect and a knee correction effect when a person with X-shaped legs wears shoes having the shoe sole according to the fourth preferred embodiment of the present invention.

The joining member 200 according to the fourth preferred embodiment of the present invention has a form corresponding to the joining recess 110 formed on the shoe sole 100, and has a front portion thicker than a rear portion in order to transfer the center of gravity 105 forward. Moreover, the joining member 200 is made of the same material as the first preferred embodiment.

As described above, in the case that the joining recess 110 is formed only on the outer side of the shoe sole 100, the shoe sole 100 can correct the X-shaped legs by inducing adduction by the joining member 200 during walking, and provide a kinetic effect because the front portion of the joining member 200 is thicker than the rear portion.

Embodiment 5

FIG. 7 is an exploded perspective view of a shoe sole for losing weight according to a fifth preferred embodiment of the present invention, and FIG. 8 is a sectional view taken along the line of C-C of FIG. 7. The shoe sole 100 according to the fifth preferred embodiment of the present invention includes the joining recess 110 formed on the upper face thereof and the joining member 200 formed on one of the first to fifth preferred embodiments, and further includes an insole 300 disposed on the upper face of the joining member 200. In this instance, the insole 300 may be formed separately from the joining member 200, and as occasion demands, may be formed integrally with the joining member 200 in such a way as to correspond to the joining recess 110 of the shoe sole 100 and to be joined with the shoe sole 100.

Embodiment 6

FIG. 9 is a side elevation view of a shoe sole for losing weight according to a sixth preferred embodiment of the present invention, and FIG. 10 is a back elevation view of the shoe sole for losing weight according to the sixth preferred embodiment of the present invention. As shown in FIGS. 9 and 10, in order to make the forefoot portion 101 heavier than the rearfoot portion 102 of the shoe sole 100 formed according to one of the first to fifth preferred embodiments, the rearfoot portion 102 has a groove 120 formed on a side of the lower face thereof. The shoe sole according to the sixth preferred embodiment can enhance the kinetic effect by increasing a weight difference between the forefoot portion 101 and the rearfoot portion 102 because the groove 120 is formed on the lower face of the rearfoot portion 102.

Embodiment 7

FIG. 11 is a perspective view of the shoe sole for losing weight according to a seventh preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs, FIG. 12 is an exploded perspective view of the shoe sole for losing weight according to the seventh preferred embodiment, and FIG. 13 is a sectional view taken along the line of A-A of FIG. 12. As shown in FIGS. 11 to 13, the shoe sole 100 according to the seventh preferred embodiment of the present invention includes a plurality of joining recesses 110 formed on the upper face thereof. The shoe sole 100 according to the seventh preferred embodiment may be made of any material if the material is prevented from being easily deformed or damaged by external impact or pressure caused by the wearer's weight. However, preferably, the shoe sole is made of synthetic resin or a rubber material. Moreover, more preferably, the shoe sole is made of ethylene vinyl acetate, polyurethane, and chloroprene rubber.

The plural joining recesses formed on the upper face of the shoe sole 100 are formed around a toe area and a central area of the shoe sole 100 in order to enhance the kinetic effect and transfer the center of gravity of the shoe sole 100 forward. Hereinafter, for convenience in description, the joining recess 110 formed around the toe area of the shoe sole 100 is called a front joining recess 111 and the joining recess 110 formed around the central area is called a central joining recess 112. The front joining recess 111 is formed within a range of 0% to 40% in a forward longitudinal direction of the shoe sole 100, and the central joining recess 112 is formed within a range of 41% to 80% in the forward longitudinal direction of the shoe sole 100.

FIG. 14 is a sectional view taken along the line of B-B of FIG. 12, and FIG. 15 is a sectional view taken along the line of C-C of FIG. 12. At least one of the front joining recess 111 and the central joining recess 112 has an inclined surface in a width direction in order to correct the O-shaped legs or the X-shaped legs into straight legs. As shown in FIGS. 14 and 15, the front joining recess 111 out of the joining recesses 110 of the shoe sole 100 according to the seventh preferred embodiment does not have any inclined surface but the central joining recess 112 has an upward inclined surface, which is upwardly inclined at the inner side thereof in a width direction in such a way that a height h₁ of the inner side is greater than a height h₂ of the outer side. Furthermore, the front joining recess 111 and the central joining recess 112 may have a front portion or a rear portion, which is higher than the other portion, in order to enhance the kinetic effect, and especially in case of the central joining recess 112, to prevent an excessive forward leaning of the center of gravity of the shoe sole 100. The height h₁ of the inner side and the height h₂ of the outer side and the heights of the front portion and the rear portion can be changed in various ways in consideration of the wearer's health conditions, the wearer's wanted kinetic effect, and so on. In this instance, in order to enhance the correction effect, the front joining recess 111 may also have an upward inclined surface, which is upwardly inclined at the inner side thereof in a width direction.

As shown in FIGS. 11 to 15, the joining member 200 according to the seventh preferred embodiment is joined with the joining recess 110 formed on the upper face of the shoe sole 100, and has a form generally corresponding to the joining recess 110. Hereinafter, for convenience in description, the joining member 200 inserted into the front joining recess 111 is called a front joining member 201 and the joining member 200 inserted into the central joining recess 112 is called a central joining member 202. The front joining member 201 and the central joining member 202 are respectively inserted into the front joining recess 111 and the central joining recess 112 formed on the shoe sole 100 to thereby make the shoe sole 100 heavier. In this instance, it is preferable that the front joining member 201 and the central joining member 202 are made of a high-density material, which is heavier than the material of the shoe sole 100, such as high-gravity polyurethane or high-gravity rubber.

As described above, when the front joining member 201 and the central joining member 202, which are made of the material heavier than that of the shoe sole 100, are joined with the front joining recess 111 and the central joining recess 112 formed at the toe area and the central area of the shoe sole 100 to thereby make the forefoot portion heavier than the rearfoot portion, the center of gravity of a shoe can move forward at a predetermined interval. When the center of gravity moves forward, the wearer's foot leans forward, and then, it makes forward plantarflexion quicker and smoother, whereby the wearer can be provided with an exercise effect to the same extent as the wearer lifts dumbbells with the leg during the stance phase. Moreover, at least one pair of the front joining recess 111 and the front joining member 201 and the central joining recess 112 and the central joining member 202 may have an inner side or an outer side, which is heavier than the other side in a width direction, so that the O-shaped legs or the X-shaped legs can be corrected.

As shown in FIGS. 11 to 15, in order to form the heights h₁ of the inner sides of the central joining recess 112 and the central joining member 202 greater than the heights h₂ of the outer sides thereof in the width direction, the central joining recess 112 and the central joining member 202 respectively have upward inclined surfaces, which are upwardly inclined at the inner sides thereof in the width direction. When the inner side is heavier than the outer side, the shoe having the shoe sole according to the present invention can correct the O-shaped legs by inducing eversion and abduction during walking.

FIG. 17 is an exploded perspective view of the shoe sole 100 for losing weight according to the seventh preferred embodiment of the present invention, which is designed for wearers, who have X-shaped legs. As shown in FIG. 17, in order to form the width-direction outer sides of the central joining recess 112 and the central joining member 202 thicker than the width-directional inner sides thereof, the central joining recess 112 and the central joining member 202 respectively have downward inclined surfaces, which are downwardly inclined at the inner sides thereof in the width direction. When the outer side is heavier than the inner side, the shoe having the shoe sole according to the present invention can correct the X-shaped legs by inducing inversion and adduction during walking. In this instance, in order to enhance the correct effect, the front joining recess 111 may also have a downward inclined surface, which is downwardly inclined at the inner side thereof in the width direction.

FIG. 16 is a sectional view taken along the line of D-D of FIG. 12. As shown in FIG. 16, in order to make the forefoot portion of the shoe sole 100 heavier than the rearfoot portion, the shoe sole 100 further includes a groove 120 formed on the lower face of the rearfoot portion. The shoe sole according to the seventh preferred embodiment can enhance the kinetic effect by increasing a weight difference between the forefoot portion and the rearfoot portion because the groove 120 is formed on the lower face of the rearfoot portion.

Embodiment 8

FIG. 18 is an exploded perspective view of a shoe sole for losing weight according to an eighth preferred embodiment of the present invention, which is designed for wearers, who have ( ) shaped legs, and FIG. 19 is a sectional view taken along the line of E-E of FIG. 18. The shoe sole 100 according to the eighth preferred embodiment of the present invention includes the shoe sole 100 according to the seventh preferred embodiment, and further includes an insole 300 disposed on the upper face of the joining member 200. In this instance, the shoe sole 100 and the joining member 200 generally have the same structure as the seventh preferred embodiment. However, as occasion demands, the joining member 200 may be formed integrally with the insole 300 in such a way as to correspond to the front joining recess 111 and the central joining recess 112 formed of the lower face of the shoe sole 100 and to be joined with the shoe sole 100.

Embodiment 9

FIG. 20 is a sectional view of a shoe sole for losing weight according to a ninth preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs. As shown in FIG. 20, the shoe sole 100 and the joining member 200 according to the ninth preferred embodiment respectively have structures similar to the structures of the shoe sole 100 and the joining member 200 of the seventh preferred embodiment. However, the joining recess 110 is formed on the lower face of the shoe sole 100.

The joining member 200 according to the ninth preferred embodiment is joined to the joining recess 110 formed on the lower face of the shoe sole 100 by means of one of various kinds of adhesives or sewing.

In this instance, the joining recess 110 has a width-directional inclined surface, as described in the seventh preferred embodiment, formed in such a way as to be fit to the wearer with the O-shaped legs or the X-shaped legs. In addition, the upper face has a form corresponding to the width-directional inclined surface of the joining recess 110.

Embodiment 10

FIG. 21 is an exploded perspective view of a shoe sole for losing weight according to a tenth preferred embodiment of the present invention, which is designed for wearers, who have O-shaped legs. The shoe sole 100 according to the tenth preferred embodiment has a structure similar to the structure of the shoe sole of the ninth preferred embodiment. However, as shown in FIG. 21, the shoe sole 100 according to the tenth preferred embodiment includes a midsole 104 and an outsole 106. In this instance, the joining recess 110 is formed on the lower face of the midsole 104, and the joining member 200 is interposed between the midsole 104 and the outsole 106, and then, inserted into the joining recess 110.

However, as occasion demands, the joining members 200 are respectively formed integrally with an upper face of the outsole 106 in such a way as to correspond to the front joining recess 111 and the central joining recess 112 formed on the lower face of the midsole 104, and are joined with the front joining recess 111 and the central joining recess 112.

MODIFICATION

The joining recess 110 formed on the upper face or the lower face of the shoe sole 100 for losing weight according to the present invention is not limited in its position, and can be formed at any area, namely, at the toe area, the central area, a heel area, or other area. Furthermore, the number of the joining recesses 110 is not also limited, and can be changed according to the wearer's health conditions.

<Structure of Shoe Having Shoe Sole for Losing Weight>

FIG. 22 is a side elevation view of a shoe having the shoe sole for losing weight according to the sixth preferred embodiment of the present invention, and FIG. 23 is a side elevation view of a shoe having the shoe sole for losing weight according to the seventh preferred embodiment of the present invention. As shown in FIGS. 22 and 23, the shoe sole 100 according to one of the first to tenth preferred embodiments of the present invention is attached to the bottom of a shoe 10 having the upper 400 by means of one of various adhesives or sewing. When the wearer walks wearing the shoe 10 having the shoe sole 100, which is heavier at the forefoot portion than the rearfoot portion, the shoe can provide the kinetic effect to the same extent as the wearer lifts dumbbells with the legs, and correct the O-shaped legs or the X-shaped legs into straight legs without a surgical procedure due to the weight difference between the inner side and the outer side of the shoe 10.

While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention. 

1. A shoe sole for losing weight comprising: a shoe sole having a joining recess formed on an upper face or a lower face thereof; and a joining member having a form corresponding to the form of the joining recess and joined to the joining recess, the joining member being made of a material, which is higher in density than that of the shoe sole.
 2. The shoe sole according to claim 1, wherein the joining member has a front portion heavier than a rear portion.
 3. The shoe sole according to claim 1, wherein the joining recess is formed at a toe area of the shoe sole.
 4. The shoe sole according to claim 1, wherein the joining recess is formed on an inner side of the shoe sole for a wearer with O-shaped legs.
 5. The shoe sole according to claim 1, wherein the joining recess 110 is formed on an outer side of the shoe sole 100 for a wearer with X-shaped legs.
 6. The shoe sole according to claim 1, wherein a plurality of the joining recesses are formed.
 7. The shoe sole according to claim 1, wherein the plural joining recesses are respectively formed at the toe area and the central area in a longitudinal direction of the shoe sole, and at least one of the joining recess of the toe area and the joining recess of the central area has an inclined surface.
 8. The shoe sole according to claim 7, wherein the joining recess formed at the toe area of the shoe sole is formed within a range of 0% to 40% in a forward longitudinal direction of the shoe sole, and the joining recess formed at the central area of the shoe sole is formed within a range of 41% to 80% in the forward longitudinal direction of the shoe sole.
 9. The shoe sole according to claim 7, wherein the inclined surface of the joining recess is an upward inclination, which is inclined upwardly from the inner side of the shoe sole.
 10. The shoe sole according to claim 7, wherein the inclined surface of the joining recess is a downward inclination, which is inclined downwardly from the inner side of the shoe sole.
 11. The shoe sole according to claim 1, wherein the joining recess is formed on the upper face of the shoe sole, an insole is disposed on the shoe sole, and the joining member and the insole are formed integrally with each other.
 12. The shoe sole according to claim 1, wherein the joining recess is formed on a lower face of a midsole of the shoe sole, and the joining member is formed integrally with an upper face of an outsole of the shoe sole.
 13. The shoe sole according to claim 1, wherein the shoe sole further includes a groove formed on a side of the bottom surface of a rearfoot portion of the shoe sole in order to reduce weight of the rearfoot portion.
 14. A shoe having the shoe sole for losing weight according to claim
 1. 